我们可以在不同的机器上使用prometheus和node_exporter吗？

Question

我们可以在一台计算机上使用普罗米修斯，而在不同节点上使用node_exporter，并将所有度量标准收集到存在普罗米修斯的单台计算机上吗？

Answer 1

是的，可以。这个想法是，您拥有一台（或几台）Prometheus服务器，可以根据需要从许多其他服务器上收集度量标准。

您不必在要监视的每台服务器上运行Prometheus本身，只需在您要从中收集指标的导出器（例如，node_exporter）上运行。

Answer 2

按如下所示更改prometheus.yml（prometheus-2.5.0）以添加多个主机，

    # my global config
global:
  scrape_interval:     15s # Set the scrape interval to every 15 seconds. Default is every 1 minute.
  evaluation_interval: 15s # Evaluate rules every 15 seconds. The default is every 1 minute.
  # scrape_timeout is set to the global default (10s).

# Alertmanager configuration
alerting:
  alertmanagers:
  - static_configs:
    - targets:
      # - alertmanager:9093

# Load rules once and periodically evaluate them according to the global 'evaluation_interval'.
rule_files:
  # - "first_rules.yml"
  # - "second_rules.yml"

# A scrape configuration containing exactly one endpoint to scrape:
# Here it's Prometheus itself.
scrape_configs:
  # The job name is added as a label `job=<job_name>` to any timeseries scraped from this config.
  - job_name: 'node'

    # metrics_path defaults to '/metrics'
    # scheme defaults to 'http'.

    static_configs:
    - targets: ['192.168.x.x:9100']
    - targets: ['192.168.x.y:8080']

Answer 3

这是为普罗米修斯设计的。
在一台计算机上安装prometheus服务器，并在各处安装node_exporter。